The original excel spreadsheet is pretty easy to use. Just put in the sq. footage of a type of building, or number of a type of residences, and it will output the trip ends. This number should be added to the existing ADT to calculate the amount of total traffic impact that a development will add to the existing infrastructure. I hope people find this useful, as I have. It was on the Florida DOT's website a few years back, but is based on the ITE trip generation methodology. Apparently, I cannot attach an excel file, but if you send your email address, I'd be glad to email it to you. You can try inserting this attachment into excel, but I don't know how it will turn out since the formulas were likely lost.
SORRY THAT ATTACHMENT IS JUNK, JUST SEND ME YOUR EMAIL ADDRESS IF YOU ARE INTERESTED.